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THE BIRDS OF AUSTRALIA 



usually of some shade of buff, boldly blotched and finely marked 

 with dark-brown, the under markings being grey. The eggs 

 measure about 1.38 x 1.03 inch. 



The Marsh or Whiskered Tern. 



Hydroclielidon hybrida. 

 Europe to China in summer, northwards in winter to Malayan 

 Archipelago, Africa and Australia. 



Breeding plumage: Torehead, crown and nape black, from gape to 

 nape a white streak; upper parts slate grey; greater part of inner webs 



Caspian Tern: Hydroproffne caspia. 



Meyer. 



of primaries, white; tail grey, throat grey, breast dark grey, abdomen 

 black, under wing-coverts white. Total length 11 inches, eulmen 1.4, 

 wing 9.25, tail 3.8, tarsus 0.9. In moulting season underparts white. 



Nest generally built of water-weeds or rushes on floating 

 vegetation in a swamp. The clutch is three, in colour greyish- 

 green, blotched with brownish markings of varying density. 

 The eggs measure abovit 1.44 x 1.12 inch. 



Gull-billed Tern. 



Geloclielidon anglica. 

 Australia generally; Europe, Asia, North and East America. 

 Crown of the head and back of the neck are black; all the upper 

 surface and primaries are light silvery grey; the remainder of the 



